Definition: Adarabitrium is a Greek term that describes the unique features of the human heart. It refers to its different types, which are categorized based on their functions: <0x0A><0x0A>1. Atrial: This type of atrium is responsible for pumping blood into the arteries and lungs.<0x0A>2. Ventricular: The ventricles are the muscular organs that pump blood from the heart to the arteries and lungs. <0x0A>3. Mitral: This valve connects the left atrium with the right ventricle, and it controls the flow of blood into the lungs.<0x0A>4. Tricuspid: This valve separates the left and right chambers of the heart, and it pumps blood to the lungs. <0x0A><0x0A>The unique features of each type of atrium have a significant impact on the functioning of the heart.